EFCO S5500 Advanced - Manual (Page 37)

EFCO CORPORATION 6/2012 PART NO. Y557 37
Series 5500 Advanced & Alternate Installation Instructions
Section VI: Expansion Mullions
STEP #3 GLAZE EXPANSION MULLIONS
A. Glaze the curtain wall as instructed in Sections IV, V, and VI of the Standard
Installation Instructions.
IMPORTANT NOTE: The horizontal and horizontal pressure cover must be notched,
or cut 1/8” short on the male mullion side of the glazing pocket, as shown below to
allow for horizontal expansion and contraction of the curtain wall.
MALE MULLION
Horizontal pressure
cover cut 1/8” short
on male mullion side.